In an interview with MTV News, Xbox bossman Don Mattrick confirmed that Bungie was indeed working on a new Halo game for Microsoft Game Studios. Asked to clarify if this project was either Ensemble Studios' upcoming Halo Wars or the still mysterious Peter Jackson Halo Chronicles project, Mattrick said neither. Evidently, this would be another Halo game. We know, you're shocked.
The real question is: Is Mattrick talking about the long-rumored Halo Recon Advanced Warfighter title or the recently teased game whose announcement was unceremoniously canceled? Or perhaps those two are one and the same? Regardless, Mattrick wasn't sharing that info; he quickly changed the subject.